CN202816391U - Portable audio player for controlling volume and audio frequency output - Google Patents
Portable audio player for controlling volume and audio frequency output Download PDFInfo
- Publication number
- CN202816391U CN202816391U CN2012204509799U CN201220450979U CN202816391U CN 202816391 U CN202816391 U CN 202816391U CN 2012204509799 U CN2012204509799 U CN 2012204509799U CN 201220450979 U CN201220450979 U CN 201220450979U CN 202816391 U CN202816391 U CN 202816391U
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- audio frequency
- audio
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- volume
- output
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Abstract
The utility model discloses a novel portable audio player for controlling volume and audio frequency. The player is sequentially composed of an upper cover, a battery, a circuit board and a lower cover from top to bottom, wherein the circuit board is provided with a micro-processor, an audio frequency processing chip, a volume control chip, an audio frequency output socket, a storage unit, a power switch and a charging socket; the micro-processor decodes an audio frequency file in a storage unit into a digital signal and outputs the digital signal, a part the frequency of which is higher than 2000 hertz, of the output digital signal, is processed through a built-in program in the audio frequency processing chip so as to change the digital signal into a signal the frequency of which is below 2000 hertz through a chip built-in algorithm; and an audio frequency signal is output to a volume control chip from the audio frequency processing chip, and the volume control chip can control power output by the audio frequency signal in an appointed range. The novel portable audio player provided by the utility model can effectively help users to control a sound signal in the reasonable range so as to not damage the audition of the users.
Description
Technical field
The utility model relates to a kind of player of voice signal output, especially a kind of small-sized, the portable audio player that can control the output of volume audio frequency.
Background technology
In recent years, increasing conceived father and mother begin fetus is carried out prenatal culture.Traditional prenatal culture is the method that adopts environment source of sound sounding, listens to the pregnant woman with player plays prenatal culture contents such as audio amplifiers in the room.Can owing to fetus in the uterus, and the environment source of sound is across thick stomach wall and amniotic fluid, fetus does not almost receive voice signal.Special prenatal culture instrument occurred afterwards and solved this problem, but these prenatal culture players all do not have volume and the audio frequency of sounding are limited.Studies show that the sound that volume is excessive or audio frequency is too high will damage the hearing of fetus.So need to process the sound of prenatal culture, in rational scope, enable voice can not damage the healthy of fetus and grow volume and audio frequency control.
Equally, along with popularizing of portable audio player, a lot of people owing to volume is not controlled, listen the excessive music of volume for a long time when listening to the music, cause impaired hearing.
Lack at present a kind of suitable portable audio player, can effectively control the output of volume and audio frequency.
Summary of the invention
The utility model overcomes the deficiencies in the prior art exactly, and a kind of novel portable audio player that can control volume and audio frequency is provided, and can effectively help the user that voice signal is controlled in the rational scope, does not damage user's hearing.
In order to address the above problem, the utility model has adopted following technical scheme: a kind of audio player of portable control audio volume output is made of loam cake, battery, circuit board, lower cover from top to bottom successively.
In the utility model, microprocessor, audio processing chip, volume control chip, audio frequency output socket, storage unit, power switch, charging socket are arranged on the circuit board.
In the utility model, the needed electric power of circuit board is supplied with by battery, and the power switch of circuit board is controlled by power switch.
In the utility model, microprocessor is decoded into digital signal and output to the audio file in the storage unit, the sound signal of output is by the built-in program of audio processing chip, the part that frequency is higher than 2000 hertz is processed, and becomes signal below 2000 hertz by the built-in chip type algorithm.
In the utility model, sound signal outputs to the volume control chip from audio processing chip, and the volume control chip can be controlled at the power of sound signal output in the scope of appointment.
In the utility model, the switch of audio processing chip and volume control chip is by the programmed control in the microprocessor.
Advantage of the present utility model: 1, the utility model is easy to use, simple to operate.
2, lightweight and portable in volume is easy to carry.
3, applied widely, can use under many circumstances.
4, effectively help the user with the volume audio frequency control within rational scope, prevent the infringement to hearing.
5, the control of audio frequency and volume can switch.
Description of drawings
Fig. 1 is the structural representation of the player of a kind of portable control volume of the utility model patent audio frequency output
Specific embodiment
Below in conjunction with accompanying drawing the utility model is further explained: as shown in Figure 1, a kind of audio player of controlling audio volume output is made of loam cake (1), battery (4), circuit board (14), lower cover (10) from top to bottom successively.
Display screen (2) and control panel (3) are arranged on the loam cake (1).
Microprocessor (8) audio processing chip (5), volume control chip (7), audio frequency output socket (13) are arranged, storage unit (6), power switch (9), charge port (12), card reader (11) on the circuit board (14).
The needed electric power of circuit board (14) is supplied with by battery (4), and the power switch of circuit board is controlled by power switch (9).When power switch (9) when being in closed condition, audio frequency output socket (13) is not exported any voice signal.
Microprocessor (8) is decoded into digital signal and output to the audio file in the storage unit (6), the sound signal of output is by the built-in program of audio processing chip (5), the part that frequency is higher than 2000 hertz is processed, and becomes signal below 2000 hertz by the built-in chip type algorithm.
Sound signal outputs to volume control chip (7) from audio processing chip (5), and volume control chip (7) can be controlled at the power of sound signal output in the scope of appointment.
Volume control chip (7) is reduced into electric signal to voice signal, exports by audio frequency output socket (13).
The user by on the control panel (3) by the key control player, and by the inner programmed control audio processing chip (5) of microprocessor (8) and the switch of volume control chip (7).
When audio processing chip (5) is in " unlatching " state, again output after audio processing chip (5) will be processed voice signal; When audio processing chip (5) is in " closing " state, audio processing chip (5) will can not processed voice signal.
When volume control chip (7) is in " unlatching " state, again output after volume control chip (7) will be processed voice signal; When volume control chip (7) is in " closing " state, volume control chip (7) will can not processed voice signal.
Card reader (11) can read the audio file on the storage card of insertion, enlarges the memory space of player.
The utility model can be used for prenatal culture, and audio frequency output socket (13) can connect loudspeaker, is used for to the fetus prenatal culture.The utility model can be effectively Sound control under the volume to fetal well-being, can not damage the hearing of fetus and grow, allow prenatal culture become safer.
The utility model also can be used for normal music appreciating, and the user can be controlled at voice signal in the rational scope after opening the software switch of volume control effectively, does not damage user's hearing.
Claims (4)
1. the player of portable control audio volume output, it is characterized in that: described player from top to bottom is made of loam cake (1), battery (4), circuit board (14), lower cover (10) successively; Microprocessor (8), audio processing chip (5), volume control chip (7), audio frequency output socket (13) are arranged, storage unit (6), power switch (9), charge port (12), card reader (11) on the circuit board.
2. the player of a kind of portable control audio volume output according to claim 1, it is characterized by: microprocessor (8) is decoded into digital signal and output to the audio file in the storage unit (6).
3. the player of a kind of portable control audio volume output according to claim 1, it is characterized by: sound signal outputs to volume control chip (7) from audio processing chip (5), and volume control chip (7) can be controlled at the power of sound signal output in the scope of appointment.
4. the player of a kind of portable control audio volume output according to claim 1, it is characterized by: the needed electric power of circuit board (14) is supplied with by battery (4), and the power switch of circuit board (14) is controlled by power switch (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204509799U CN202816391U (en) | 2012-09-06 | 2012-09-06 | Portable audio player for controlling volume and audio frequency output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204509799U CN202816391U (en) | 2012-09-06 | 2012-09-06 | Portable audio player for controlling volume and audio frequency output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202816391U true CN202816391U (en) | 2013-03-20 |
Family
ID=47875236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204509799U Expired - Fee Related CN202816391U (en) | 2012-09-06 | 2012-09-06 | Portable audio player for controlling volume and audio frequency output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202816391U (en) |
-
2012
- 2012-09-06 CN CN2012204509799U patent/CN202816391U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 300384 the Binhai New Area of Tianjin Huayuan Industrial Area Rong Yuan Road No. 15 1-A-1407 Patentee after: Truehigh Tech Co., Ltd. Address before: 2 No. 300384 Tianjin Alex Hua Tian Nankai District Huayuan Industrial Zone Road International Business Center 6010 Patentee before: Truehigh Tech Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20180906 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |